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<title> Evaluating snippets </title>
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<h1> Evaluating snippets </h1>
<p> In this section, you will evaluate Java expressions using the Java scrapbook.
Java scrapbook pages allow you to experiment with Java code fragments before
putting them in your program. </p>
<ol>
  <li> In the File menu select <STRONG>New &gt; Other &gt; Java &gt;
	Java Run/Debug &gt; Scrapbook Page</STRONG>. You will be prompted for a folder
    destination for the page. <p> <img src="images/wiz_new_scrap.png"  alt="Create Java Scrapbook Page wizard"> 
    </p></li>
  <li> In the <strong>Enter or select the folder</strong> field, type or browse below 
    to select the <em>JUnit</em> project root directory. </li>
  <li> In the <strong>File name</strong> field, type <em>MyScrap</em>.&nbsp; </li>
  <li>  
    
    Click <strong>Finish</strong> when you are done.&nbsp; A scrapbook page
    resource is created for you with the <em>jpage</em> file extension.&nbsp; (The <em>jpage
    </em>file extension will be added automatically if you do not enter it yourself.)&nbsp;
    The scrapbook page opens automatically in an editor. 
 </li>
  <li> In the editor, type <code>System.get</code> and then use content assist (<kbd>Ctrl+Space</kbd>) 
    to complete the snippet as <code>System.getProperties()</code>. 
    <p> <img src="images/editor_myscrap_sysytem_get.png"  alt="Content proposals popup"> </p>
  </li>
  <li> Select the entire line you just typed and select <strong>Display</strong> 
    from the context menu.&nbsp; You can also select <strong>Display Result of
    Evaluating Selected Text</strong> from the toolbar. 
    <p> <img src="images/editor_myscrap_display.png"  alt="Snippet editor with System.getProperties() selected showing context menu"> 
    </p>
  </li>
  <li> When the evaluation completes, the result of the evaluation is displayed
    and highlighted 
    in the scrapbook page. </li>
  <li> You can inspect the result of an evaluation by selecting text and
    choosing <strong>Inspect</strong> from the context menu (or selecting <strong>Inspect
    Result of Evaluating Selected Text</strong> from the toolbar.) </li>
  <li> When you are finished evaluating code snippets in the scrapbook page, you
    can close the editor.&nbsp; Save the changes in the page if you want to keep
    the snippets for future use. </li>
</ol>
<P class="nav_footer" id="nav_footer">Next Section: <A href="qs-Browsing.htm">Using the Java browsing perspective</A>
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<h3 class="related">Related concepts</h3>
  <a href="../concepts/cdebugger.htm">Debugger</a>
<h3 class="related">Related tasks</h3>
  <a href="../tasks/task-create_scrapbook_page.htm">Creating a Java scrapbook page</a><br>
  <a href="../tasks/task-display_evaluation_result.htm">Displaying the result of evaluating an expression</a><br>
  <a href="../tasks/task-inspect_evaluation_result.htm">Inspecting the result of evaluating an expression</a>

<h3 class="related">Related references</h3>
  <a href="../reference/ref-wizard-scrapbook.htm">New Java Scrapbook Page wizard</a><br>
  <a href="../reference/views/ref-view-scrapbook.htm">Java scrapbook page</a><br>
  <a href="../reference/views/expressions/ref-expressions_view.htm">Expressions view</a>
  
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